package com.zwh.security;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.zwh.entity.User;
import com.zwh.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;

/**
 * 核心：用户姓名认证
 */
@Service
public class MyUserDetailsService implements UserDetailsService {

    @Autowired
    private UserMapper userMapper;


    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {

        //查询用户信息
        LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(User::getUsername,username);
        User user = userMapper.selectOne(queryWrapper);
        //如果没有查询到用户就抛出异常
        if(Objects.isNull(user)){
            throw new RuntimeException("用户名或者密码错误");
        }
        //todo 查询对应的权限信息
        user.setPermisson(new ArrayList<>(Arrays.asList("test,admin")));
        //把数据封装成UserDetails返回
        return user;
    }
}
